package com.itheima.reggie.conrtroller;

import com.itheima.reggie.common.OssClient;
import com.itheima.reggie.common.R;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@RestController
@RequestMapping("/common")
@Slf4j
public class CommonController {
    @Autowired
    private OssClient ossClient;

    @Value("${aliyun.ossUrl}")
    private String ossUrl;
    /**
     * 文件上传
     * @param file
     * @return
     */
    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) {
        //file是一个临时文件，需要转存到指定位置，否则本次请求完成后临时文件会删除
        log.info(file.toString());
        //原始文件名
        String originalFilename = file.getOriginalFilename();//abc.jpg
        String substring = originalFilename.substring(originalFilename.lastIndexOf("."));
        //使用UUID重新生成文件名，防止文件名称重复造成文件覆盖
        String fileName = UUID.randomUUID().toString() + substring;//dfsdfdfd.jpg

        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
        String format1 = format.format(new Date());
        fileName =format1 + "/" + fileName;

        try {
            ossClient.uploadAliyunOss(fileName,file.getBytes());
        } catch (IOException e) {
            throw new RuntimeException("文件上传失败");
        }
        return R.success(ossUrl+fileName);//把文件名写回去
    }

   /* *//**
     * 文件下载
     *
     * @param name
     * @param response
     *//*
    @GetMapping("/download")
    public void download(String name, HttpServletResponse response) {
        try {
            //输入流，通过输入流读取文件内容
            FileInputStream fileInputStream = new FileInputStream(new File(basePath + name));
            //输入流，通过输出流将文件写回浏览器
            ServletOutputStream outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");
            int len = 0;
            byte[] bytes = new byte[1024];
            while ((len = fileInputStream.read(bytes)) != -1) {
                outputStream.write(bytes, 0, len);
                outputStream.flush();
            }
            outputStream.close();
            fileInputStream.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }*/
}
